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JPL Small-Body Database Browser
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172211 (2002 QE84)
Classification: Main-belt Asteroid          SPK-ID: 2172211
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668513828392354 2.3988e-07  
a 2.479353991203593 2.3029e-08 au
q 2.065670349223296 5.8699e-07 au
i 4.10371411564978 7.0297e-06 deg
node 336.8005490297693 7.391e-05 deg
peri 188.6519619635354 7.6657e-05 deg
M 2.316246016023166 3.2893e-05 deg
tp 2458991.325372969991
(2020-May-21.82537297)
0.00013035 TDB
period 1425.956356947869
3.90
1.9867e-05
5.439e-08
d
yr
n .2524621446132808 3.5174e-09 deg/d
Q 2.89303763318389 2.6871e-08 au
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      9816 days (26.87 yr)  
   first obs. used      1993-03-21  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51431  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:45:23  

Additional Information
 Earth MOID = 1.07317 au 
 Jupiter MOID = 2.08569 au 
 T_jup = 3.456 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457608.5 (2016-Aug-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676935004275092 2.3993e-07  
q 2.063917413495695 5.8783e-07 au
tp 2457565.997384497589
(2016-Jun-26.49738450)
0.00014128 TDB
node 336.8341259420116 7.3876e-05 deg
peri 188.7902252592488 7.6645e-05 deg
i 4.105156479695728 7.0309e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      318  
   data-arc span      9816 days (26.87 yr)  
   first obs. used      1993-03-21  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51431  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:45:23  

Additional Information
 Jupiter MOID = 2.08569 au 
 T_jup = 3.456 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.75681636787909E-14 -1.409790153671319E-13 -2.959885035130884E-11 -1.07499179312232E-12 -2.846698735012512E-12 -8.26797453417682E-14
q -1.409790153671319E-13 3.455481019107033E-13 7.19321608867879E-11 2.629098380160553E-12 6.839311433984394E-12 2.02034485893989E-13
tp -2.959885035130884E-11 7.19321608867879E-11 1.995880027480973E-8 5.843966742961577E-10 2.671846048573272E-9 4.8258581115046E-11
node -1.07499179312232E-12 2.629098380160553E-12 5.843966742961577E-10 5.457681903021663E-9 -5.361612565113614E-9 -1.310637992019862E-10
peri -2.846698735012512E-12 6.839311433984394E-12 2.671846048573272E-9 -5.361612565113614E-9 5.874498517620641E-9 1.378996974934891E-10
i -8.26797453417682E-14 2.02034485893989E-13 4.8258581115046E-11 -1.310637992019862E-10 1.378996974934891E-10 4.943398684640561E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO454180  

172211 (2002 QE84)          Discovered 2002-Aug-27 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

Alternate Designations
 2002 QE84 = 1993 FK68 = 2003 WZ114 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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